Cobalt

blue
JP: コバルト/こばると Chemical element in paint, used for sometsuke (blue and white painting).  Cobalt is used as a prime ingredient for most of sometsuke...

Shonzui

blue and white
JP: 祥瑞/しょんずい Blue and white painted porcelain products, made in the kiln of Jing de Zhen, China, in the latter part of the 16th century to the ear...